Description:
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documentation says that imagecreatefromstring function trows only E_WARNING lavel errors but if image is broken it throws fatal error.

on local machine with apache2 + php (with same php version and Linux 4.4.0-53-generic) it works fine. (expected result copied from local machine).

In differences of phpinfo() I found that on local machine GD library Version 2.2.5 and on server it has 2.2.3 version. but header versions are same and running apt-get install php7.1-gb says that "already up to date"

p.s. i got that errors from ~7.1.9, mb earlier after update php on local machine it were fixed, but on server it doesn't help. 

Test script:
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<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

$image = file_get_contents('http://novostoy.com.ua/files/obekti/974144_3.jpg');
$image = imagecreatefromstring($image);

echo 'image processed';

Expected result:
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Warning: imagecreatefromstring(): gd-jpeg: JPEG library reports unrecoverable error: Unsupported marker type 0x8e in index.php on line 7

Warning: imagecreatefromstring(): Passed data is not in 'JPEG' format in index.php on line 7

Warning: imagecreatefromstring(): Couldn't create GD Image Stream out of Data in index.php on line 7
image processed

Actual result:
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Fatal error: imagecreatefromstring(): gd-jpeg: JPEG library reports unrecoverable error: Unsupported marker type 0x8e in index.php on line 7